2,000-foot Chicago skyscraper

2,000-foot Chicago skyscraper A developer's proposal for a twisting 115-story spire near Navy Pier would forever change Chicago's skyline, with architect Santiago Calatrava's design bringing the city into the 21st Century.

2,000-foot Chicago skyscraper A developer's proposal for a twisting 115-story spire near Navy Pier would forever change Chicago's skyline, with architect Santiago Calatrava's design bringing the city into the 21st Century.

2,000-foot Chicago skyscraper A developer's proposal for a twisting 115-story spire near Navy Pier would forever change Chicago's skyline, with architect Santiago Calatrava's design bringing the city into the 21st Century.